<template>
    <div class="app-container">
      <div class="filter-container">
        <el-input v-model="listQuery.productId" placeholder="产品ID" style="width: 200px;"class="filter-item" @keyup.enter.native="handleFilter" />
        <el-input v-model="listQuery.productName" placeholder="产品名称" style="width: 200px;"class="filter-item" @keyup.enter.native="handleFilter" />
        <el-input v-model="listQuery.productCategory" placeholder="产品类别" style="width: 200px;"class="filter-item" @keyup.enter.native="handleFilter" />

        <el-button v-waves class="filter-item" type="primary" icon="el-icon-search" @click="handleFilter">
          {{ $t('table.search') }}
        </el-button>
        <el-button class="filter-item" style="margin-left: 10px;" type="primary" icon="el-icon-edit" @click="handleCreate">
          {{ $t('table.add') }}
        </el-button>
      </div>
  
      <el-table
        :key="tableKey"
        v-loading="listLoading"
        :data="list"
        border
        fit
        highlight-current-row
        style="width: 100%;"
        @sort-change="sortChange"
      >
        <el-table-column :label="$t('table.id')" prop="id" sortable="custom" 
        align="center" width="80" :class-name="getSortClass('id')">
          <template slot-scope="{row}">
            <span>{{ row.id }}</span>
          </template>
        </el-table-column> 

        <el-table-column label="产品名称" width="110px" align="center">
          <template slot-scope="{row}">
            <span>{{ row.author }}</span>
          </template>
        </el-table-column>

        <el-table-column label="产品描述" width="400px" align="center">
          <template slot-scope="{row}">
            <span>{{ row.title }}</span>
          </template>
        </el-table-column>
        <el-table-column label="产品价格" width="110px" align="center">
          <template slot-scope="{row}">
            <span>{{ row.author }}</span>
          </template>
        </el-table-column>
        <el-table-column label="产品类别" width="110px" align="center">
          <template slot-scope="{row}">
            <span>{{ row.author }}</span>
          </template>
        </el-table-column>
        <el-table-column label="生产日期" width="150px" align="center">
        <template slot-scope="{row}">
          <span>{{ row.timestamp | parseTime('{y}-{m}-{d} {h}:{i}') }}</span>
        </template>
      </el-table-column>
        <el-table-column label="产品图片" width="110px" align="center">
          <template slot-scope="{row}">
            <span>{{ row.author }}</span>
          </template>
        </el-table-column>
        <el-table-column :label="$t('table.actions')" align="center" width="230" class-name="small-padding fixed-width">
          <template slot-scope="{row,$index}">
            <el-button type="primary" size="mini" @click="handleUpdate(row)">
              {{ $t('table.edit') }}
            </el-button>
            <el-button v-if="row.status!='deleted'" size="mini" type="danger" @click="handleDelete(row,$index)">
              {{ $t('table.delete') }}
            </el-button>
          </template>
        </el-table-column>
      </el-table>
  
      <pagination v-show="total>0" :total="total" :page.sync="listQuery.page" :limit.sync="listQuery.limit" @pagination="getList" />
  
      <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">

        <el-form ref="dataForm" :rules="rules" :model="temp" label-position="left" label-width="70px" style="width: 400px; margin-left:50px;">
          <el-form-item label="产品名称" prop="productName">
            <el-input v-model="temp.productName" />
          </el-form-item>
          <el-form-item label="产品描述" prop="productDescription">
            <el-input v-model="temp.productDescription" />
        </el-form-item>
        <el-form-item label="产品价格" prop="productPrice">
            <el-input v-model="temp.productPrice" />
        </el-form-item>
        <el-form-item label="产品类别" prop="productCategory">
            <el-input v-model="temp.productCategory" />
        </el-form-item>
        <el-form-item label="生产日期" prop="productionDate">
            <el-date-picker v-model="temp.productionDate" type="datetime"/>
      </el-form-item>

        <el-form-item label="产品图片" prop="productPicture">
            <el-input v-model="temp.productPicture"type="file" />
        </el-form-item>
        </el-form>

        <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">
          {{ $t('table.cancel') }}
        </el-button>
        <el-button type="primary" @click="dialogStatus==='create'?createData():updateData()">
          {{ $t('table.confirm') }}
        </el-button>
      </div>
      </el-dialog>
  
      <el-dialog :visible.sync="dialogPvVisible" title="Reading statistics">
        <el-table :data="pvData" border fit highlight-current-row style="width: 100%">
          <el-table-column prop="key" label="Channel" />
          <el-table-column prop="pv" label="Pv" />
        </el-table>
        <span slot="footer" class="dialog-footer">
          <el-button type="primary" @click="dialogPvVisible = false">{{ $t('table.confirm') }}</el-button>
        </span>
      </el-dialog>
    </div>
  </template>
  
  <script>
  import { fetchList, fetchPv, createArticle, updateArticle } from '@/api/article'
  import waves from '@/directive/waves' // waves directive
  import { parseTime } from '@/utils'
  import Pagination from '@/components/Pagination' // secondary package based on el-pagination
  
  export default {
    name: 'ComplexTable',
    components: { Pagination },
    directives: { waves },
    filters: {
      statusFilter(status) {
        const statusMap = {
          published: 'success',
          draft: 'info',
          deleted: 'danger'
        }
        return statusMap[status]
      },
    },
    data() {
        return {
            tableKey: 0,
            list: null,
            total: 0,
            listLoading: true,
            listQuery: {
                page: 1,
                limit: 20,
                productId: '',
                productName: '',
                productCategory: ''
            },
            showReviewer: false,
            temp: {
                id: undefined,
                productName: '',
                productDescription: '',
                productPrice: '',
                productCategory: '',
                productionDate: '',
                productPicture: ''
            },
            dialogFormVisible: false,
            dialogStatus: '',
            textMap: {
                update: 'Edit',
                create: 'Create'
            },
            dialogPvVisible: false,
            pvData: [],
            rules: {
                productName: [{ required: true, message: '产品名称是必填的', trigger: 'blur' }],
                productDescription: [{ required: true, message: '产品描述是必填的', trigger: 'blur' }],
                productPrice: [{ required: true, message: '产品价格是必填的', trigger: 'blur' }],
                productCategory: [{ required: true, message: '产品类别是必填的', trigger: 'blur' }],
                productionDate: [{ type: 'date', required: true, message: '生产日期是必填的', trigger: 'change' }]
            },
            downloadLoading: false
        };
    },
    created() {
      this.getList()
    },
    methods: {
      getList() {
        this.listLoading = true
        fetchList(this.listQuery).then(response => {
          this.list = response.data.items
          this.total = response.data.total
  
          // Just to simulate the time of the request
          setTimeout(() => {
            this.listLoading = false
          }, 1.5 * 1000)
        })
      },
      handleFilter() {
        this.listQuery.page = 1
        this.getList()
      },
      handleModifyStatus(row, status) {
        this.$message({
          message: '操作成功',
          type: 'success'
        })
        row.status = status
      },
      sortChange(data) {
        const { prop, order } = data
        if (prop === 'id') {
          this.sortByID(order)
        }
      },
      sortByID(order) {
        if (order === 'ascending') {
          this.listQuery.sort = '+id'
        } else {
          this.listQuery.sort = '-id'
        }
        this.handleFilter()
      },
      resetTemp() {
        this.temp = {
          id: undefined,
          importance: 1,
          remark: '',
          timestamp: new Date(),
          title: '',
          status: 'published',
          type: ''
        }
      },
      handleCreate() {
        this.resetTemp()
        this.dialogStatus = 'create'
        this.dialogFormVisible = true
        this.$nextTick(() => {
          this.$refs['dataForm'].clearValidate()
        })
      },
      createData() {
        this.$refs['dataForm'].validate((valid) => {
          if (valid) {
            this.temp.id = parseInt(Math.random() * 100) + 1024 // mock a id
            this.temp.author = 'vue-element-admin'
            createArticle(this.temp).then(() => {
              this.list.unshift(this.temp)
              this.dialogFormVisible = false
              this.$notify({
                title: '成功',
                message: '创建成功',
                type: 'success',
                duration: 2000
              })
            })
          }
        })
      },
      handleUpdate(row) {
        this.temp = Object.assign({}, row) // copy obj
        this.temp.timestamp = new Date(this.temp.timestamp)
        this.dialogStatus = 'update'
        this.dialogFormVisible = true
        this.$nextTick(() => {
          this.$refs['dataForm'].clearValidate()
        })
      },
      updateData() {
        this.$refs['dataForm'].validate((valid) => {
          if (valid) {
            const tempData = Object.assign({}, this.temp)
            tempData.timestamp = +new Date(tempData.timestamp) // change Thu Nov 30 2017 16:41:05 GMT+0800 (CST) to 1512031311464
            updateArticle(tempData).then(() => {
              const index = this.list.findIndex(v => v.id === this.temp.id)
              this.list.splice(index, 1, this.temp)
              this.dialogFormVisible = false
              this.$notify({
                title: '成功',
                message: '更新成功',
                type: 'success',
                duration: 2000
              })
            })
          }
        })
      },
      handleDelete(row, index) {
        this.$notify({
          title: '成功',
          message: '删除成功',
          type: 'success',
          duration: 2000
        })
        this.list.splice(index, 1)
      },
      handleFetchPv(pv) {
        fetchPv(pv).then(response => {
          this.pvData = response.data.pvData
          this.dialogPvVisible = true
        })
      },
      formatJson(filterVal) {
        return this.list.map(v => filterVal.map(j => {
          if (j === 'timestamp') {
            return parseTime(v[j])
          } else {
            return v[j]
          }
        }))
      },
      getSortClass: function(key) {
        const sort = this.listQuery.sort
        return sort === `+${key}` ? 'ascending' : 'descending'
      }
    }
  }
  </script>
  